Fixing Error Code 229 on Your Lennox® Furnace

Getting error code 229 on your Lennox® furnace?

This indicates your furnace is ignited at high speed because its low pressure switch couldn’t close.

It’s better to allow a professional like one from Stallion Heating and Air Conditioning in Philadelphia handle repairing or replacing this part. Our technicians are ACE certified, which means they’re well-equipped to fix a furnace error like this one.

We want you to be completely satisfied with our furnace repair in Philadelphia. That’s why we back all of our work with a one-year 100% Satisfaction Guarantee.*

How a Low-Fire Pressure Switch Works

Two-stage furnaces have multiple pressure switches to allow the system to run at different speeds—and use less energy. These switches also ensure your furnace runs safely and vents excess gases from the heat exchanger.

What Happens When a Low-Fire Pressure Switch Fails

Your low pressure switch may not be operating properly if your furnace inducer motor switches on in high speed and high ignition, then weakens and shifts into low-fire mode about 30 seconds after.

Your furnace will indicates something’s amiss with a red flash from its indicator light, which it uses to exhibit error codes. It has this red light to flash code, like Morse code.

You may notice fast flashes or an alternating slow flash as it reports a fault code.

Estimated Repair Cost for Furnace Error Code 229

A blocked vent or a draft can also create the error, so your Stallion Heating and Air ConditioningExpert will investigate other parts of your furnace first.

The bill to fix your furnace depends on what’s wrong with it and how long it takes to repair it.

You can plan to pay between $40 and $350 if you have to have a new low-fire pressure switch.

Trust the Experts at Stallion Heating and Air Conditioning

When you need to have your furnace repaired, contact the Experts at Stallion Heating and Air Conditioning to work out the fault code and take care of the issue.

Call us at or schedule an appointment online today.

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